Fighthouse

The first rule of Fighthouse: You never talk about...wait, that's not right. Actually, this martial arts gym is fairly well-known; it claims to be NYC's largest center of its kind. Certainly, there are a bevy of styles to learn: Traditionalists can go for muay thai kickboxing, jiu jitsu, or kung fu, while those open to something newer can try out mixed martial arts or "Systema," the street fighting art developed by Russian Special Forces. There's even samurai sword training, in case your fists still aren't deadly enough.